Gradient microstructure and enhanced mechanical performance of magnesium alloy by severe impact loading

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2020,（1）
• 页码范围: 45-49
• 页数: 5页
• 语种: 英文

摘要

Subjecting a workpiece to a surface treatment with severe impact loading is a novel severe plastic deformation procedure to fabricate gradient microstructures through the thickness and longitudinal direction.Mechanical performance is a function of twin density and the newly-formed grain size gradients.{ 10(1)2} tensile twins created from processing without excessive grain refinement lead to strength enhancement with retained ductility.Creation of residual strain by a single impact results in a significant reduction in time and cost of the process.This paper investigates the effect of applying severe impact loading on mechanical and microstructural properties of magnesium for various impact velocities.